I am trying to setup voltage measurement on my ArduPilot Mega / Shield board.
However I am really confused about the resistor I have to install.
On the manual it says that I have to solder a 3.9K resistor for each cell I want to measure.
Since I want to measure a 3S battery pack, I soldered the 3 resistor that came with my board.
However the voltages shown aren't right.
The command line shows the following when connecting a fully charged battery:
Volts: 1:3.82, 2:7.74, 3:11.60, 4:11.47
The same battery shows 12.5V when connected to a separate voltage meter.
What confuses me are the colors of the resistor.
On the picture of the manual, the colors seems to be yellow, violet and brown which I think it is 470.
The resistor that came with the board are colored orange, gray and brown which is 380.
And the colors that I think should be right are: orange, white and red which is 3.9K.
Could you please help me out on what resistors I should install, and how many of them?
Thank you very much.